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- ; RUN: opt -loop-reduce -S < %s | FileCheck %s
- ;
- ; LTO of clang, which mistakenly uses no TargetLoweringInfo, causes a
- ; miscompile. ReuseOrCreateCast replace ptrtoint operand with undef.
- ; Reproducing the miscompile requires no triple, hence no "TTI".
- ; rdar://13007381
- target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
- ; Verify that nothing uses the "dead" ptrtoint from "undef".
- ; CHECK-LABEL: @VerifyDiagnosticConsumerTest(
- ; CHECK: bb:
- ; "dead" ptrpoint not emitted (or dead code eliminated) with
- ; current LSR cost model.
- ; CHECK-NOT: = ptrtoint i8* undef to i64
- ; CHECK: .lr.ph
- ; CHECK: [[TMP:%[^ ]+]] = add i64 %tmp5, 1
- ; CHECK: sub i64 [[TMP]], %tmp6
- ; CHECK: ret void
- define void @VerifyDiagnosticConsumerTest() unnamed_addr nounwind uwtable align 2 {
- bb:
- %tmp3 = call i8* @getCharData() nounwind
- %tmp4 = call i8* @getCharData() nounwind
- %tmp5 = ptrtoint i8* %tmp4 to i64
- %tmp6 = ptrtoint i8* %tmp3 to i64
- %tmp7 = sub i64 %tmp5, %tmp6
- br i1 undef, label %bb87, label %.preheader
- .preheader: ; preds = %bb10, %bb
- br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit42.thread, label %bb10
- bb10: ; preds = %.preheader
- br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit42, label %.preheader
- _ZNK4llvm9StringRef4findEcm.exit42: ; preds = %bb10
- br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit42.thread, label %.lr.ph
- _ZNK4llvm9StringRef4findEcm.exit42.thread: ; preds = %_ZNK4llvm9StringRef4findEcm.exit42, %.preheader
- unreachable
- .lr.ph: ; preds = %_ZNK4llvm9StringRef4findEcm.exit42
- br label %bb36
- _ZNK4llvm9StringRef4findEcm.exit.loopexit: ; preds = %bb63
- %tmp21 = icmp eq i64 %i.0.i, -1
- br i1 %tmp21, label %_ZNK4llvm9StringRef4findEcm.exit._crit_edge, label %bb36
- _ZNK4llvm9StringRef4findEcm.exit._crit_edge: ; preds = %bb61, %_ZNK4llvm9StringRef4findEcm.exit.loopexit
- unreachable
- bb36: ; preds = %_ZNK4llvm9StringRef4findEcm.exit.loopexit, %.lr.ph
- %loc.063 = phi i64 [ undef, %.lr.ph ], [ %i.0.i, %_ZNK4llvm9StringRef4findEcm.exit.loopexit ]
- switch i8 undef, label %bb57 [
- i8 10, label %bb48
- i8 13, label %bb48
- ]
- bb48: ; preds = %bb36, %bb36
- br label %bb58
- bb57: ; preds = %bb36
- br label %bb58
- bb58: ; preds = %bb57, %bb48
- %tmp59 = icmp ugt i64 %tmp7, undef
- %tmp60 = select i1 %tmp59, i64 undef, i64 %tmp7
- br label %bb61
- bb61: ; preds = %bb63, %bb58
- %i.0.i = phi i64 [ %tmp60, %bb58 ], [ %tmp67, %bb63 ]
- %tmp62 = icmp eq i64 %i.0.i, %tmp7
- br i1 %tmp62, label %_ZNK4llvm9StringRef4findEcm.exit._crit_edge, label %bb63
- bb63: ; preds = %bb61
- %tmp64 = getelementptr inbounds i8, i8* %tmp3, i64 %i.0.i
- %tmp65 = load i8, i8* %tmp64, align 1
- %tmp67 = add i64 %i.0.i, 1
- br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit.loopexit, label %bb61
- bb87: ; preds = %bb
- ret void
- }
- declare i8* @getCharData()
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